List of Indian intelligence agencies

[4] RULED BY ACK Research and Analysis Wing (R&AW) is the primary foreign intelligence agency of India.

Aerial surveillance, SIGINT operations, photo reconnaissance flights (PHOTINT),[5] monitoring of borders, imagery intelligence (IMINT)[6] are the main functions of the Aviation Research Centre (ARC).

The aircraft are fitted with state-of-the-art electronic surveillance equipment and long range cameras capable of taking pictures of targets from very high altitudes.

ETS is believed to be involved in ELINT roles, not restricted but also includes jamming and spoofing - Electronic Warfare (EW).

[9] The Intelligence Bureau (IB) (Hindi: आसूचना ब्यूरो; IAST: āsūcanā byūro) is India's domestic internal security and counter-intelligence agency under Ministry of Home Affairs.

[10] The primary mandate of the agency is to investigate and prosecute offences that have national and cross-border implications, specifically focusing on terrorism, insurgency, and other related matters.

It has the authority to conduct searches, make seizures and arrests, as well as to collect evidence and maintain a database of terrorist organisations and their members.

[11][13][14][15] Headquartered in New Delhi, the NIA has branches in Hyderabad, Guwahati, Kochi, Lucknow, Mumbai, Kolkata, Raipur, Jammu, Chandigarh, Ranchi, Chennai and Imphal.

[18] The inter-services JCB has primary responsibility for cryptology and SIGINT, providing coordination and direction to the other military service organizations with similar mission.

While the Signals Directorate is responsible for acquiring and decrypting enemy communications, the DIPAC controls India's satellite-based image acquisition capabilities.

[24] The Signals Intelligence Directorate is a joint service organisation, composed of personnel from the Army, Navy and Air Force.

It has a large number of Wireless Experimental Units (WEUs) that carry out the task of monitoring military links of other countries.

[26] Apart from this, TERM Cells also operate the Central Monitoring System (CMS), a clandestine mass electronic surveillance program, and carry out other functions.

NCRB is headquartered in New Delhi and is part of the Ministry of Home Affairs (MHA), Government of India.

These wings are popularly known as Special Branch and headed by Additional Director General/Director General Ranked officers.